Smarfan Fitbit One Wristband/Bracelet Band for Fitbit One Wirelss Activity Plus Sleep/Replacement band for Fitbit One/Fitbit One Bands Fitbit One Replacement Band Free Size Design Your Own Free size wristband accessory ,High quality and Replacement for lost or damaged Bands. NOTE:No Tracker or other parts! For Fitbit One Band only! Not for other Models